100 days of python lesson 37 question

When faced with the Python question “100 days of python lesson 37”, there are several ways to approach the problem and find a solution. In this article, we will explore three different methods, each with its own advantages and disadvantages.

Method 1: Using a For Loop

One way to solve this question is by using a for loop to iterate through the given input and perform the necessary operations. Here is a sample code that demonstrates this approach:


input_string = "100 days of python lesson 37"
output_string = ""

for char in input_string:
    if char.isalpha():
        output_string += char.upper()
    else:
        output_string += char

print(output_string)

This code starts by initializing an empty string called “output_string”. Then, it iterates through each character in the input string. If the character is a letter, it converts it to uppercase using the “upper()” method and appends it to the output string. If the character is not a letter, it appends it as it is. Finally, it prints the resulting output string.

Method 2: Using List Comprehension

Another approach to solve this question is by using list comprehension. This method allows us to write a more concise code by combining the iteration and conditional statements into a single line. Here is a sample code that demonstrates this approach:


input_string = "100 days of python lesson 37"

output_string = ''.join([char.upper() if char.isalpha() else char for char in input_string])

print(output_string)

In this code, we use a list comprehension to iterate through each character in the input string. If the character is a letter, it converts it to uppercase using the “upper()” method. Otherwise, it keeps the character as it is. The resulting list is then joined together using the “join()” method with an empty string as the separator. Finally, the resulting output string is printed.

Method 3: Using Regular Expressions

The third approach to solve this question is by using regular expressions. Regular expressions provide a powerful and flexible way to search, match, and manipulate strings. Here is a sample code that demonstrates this approach:


import re

input_string = "100 days of python lesson 37"

output_string = re.sub(r'([a-zA-Z])', lambda match: match.group(1).upper(), input_string)

print(output_string)

In this code, we use the “re.sub()” function from the “re” module to substitute each lowercase letter with its uppercase version. The regular expression pattern “([a-zA-Z])” matches any lowercase or uppercase letter. The lambda function passed as the second argument to “re.sub()” converts the matched letter to uppercase using the “upper()” method. Finally, the resulting output string is printed.

After exploring these three methods, it is clear that the best option depends on the specific requirements of the problem and the preferences of the developer. The first method using a for loop is the most straightforward and easy to understand, making it a good choice for beginners or when simplicity is desired. The second method using list comprehension offers a more concise and elegant solution, which can be beneficial in terms of code readability and maintainability. The third method using regular expressions provides a powerful and flexible solution, especially when dealing with more complex string manipulation tasks.

In conclusion, the best option among these three methods ultimately depends on the specific context and requirements of the Python question “100 days of python lesson 37”. It is recommended to consider factors such as code simplicity, readability, and performance when choosing the most suitable solution.

Rate this post

10 Responses

  1. I personally think Method 2 using List Comprehension is the way to go! Its concise and powerful. What do you guys think?

Leave a Reply

Your email address will not be published. Required fields are marked *

Table of Contents